To avoid the problem please completely uninstall AVS4YOU software from your PC. Instructions below:
1. Go Start > All Programs > AVS4YOU > Uninstall. Please make sure to click the "Check All" button.
2. Follow this link
and download the utility that will automatically remove all AVS software components from your PC. Save the utility on your computer and launch it. It is highly recommended to leave the default option "Delete license key-files" checked.
3. Download and install the latest version of AVS Video Editor from our website:
Then try to use the program and inform about the result.